Operating System (OS)
A public key encryption system

does not encode the data before transmitting it
allows only the correct receiver to decode the data
allows anyone to decode the transmission
None of these
allows only the correct sender to decode the data

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Operating System (OS)
Thrashing

is a natural consequence of virtual memory systems
always occurs on large computers
None of these
can always be avoided by swapping
can be caused by poor paging algorithms

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